Knust rhymes with:
adjust, antitrust, blust, brust, bused, bussed, bust, clevetrust, combust, crust, cussed, discussed, disgust, distrust, dust, encrust, entrust, fussed, fust, gust, guste, hust, incrust, just, lust, mistrust, must, nonplussed, prust, readjust, robust, rust, thrust, trust, unadjust, unjust, ustrust, yust
Knust sounds like:
kansas-city, keenest, kenesset, kennecott, kienast, kincade, kincaid, kinkade, kinkead, kinoshita, kinst, kjenstad, knackstedt, knecht, knesset, knight, knighted, knighthood, knocked, knockout, knost, kumquat, kunst